陆面碳循环研究中若干问题的评述

陆面碳循环是全球碳循环研究的重要内容 ,所涉及的研究领域很广。对碳循环研究中所涉及的有关主要问题——碳元素的源和汇、“漏失汇”(missing sink)、植被净初级生产力 (NPP)、土壤呼吸、CO2 的“施肥效应”、目前和末次冰期极盛时陆地生态系统的碳储量、“反褶积”(deconvolution)分析方法以及气候变化对净碳通量的影响等方面的研究内容及其进展情况作了简要回顾和介绍。总结了不同研究方法的优缺点及各自存在的问题 ,并对有关研究结果和未来的发展趋势作了评述。

REVIEWS OF SEVERAL ASPECTS OF TERRESTRIAL CARBON CYCLING

Terrestrial carbon cycle is an important aspect of global carbon cycles and related to a diverse of research disciplines.In this paper we briefly review several main aspects of carbon cycling focusing on their research contents and advances.These aspects are source and sink of carbon element,“missing sink” problem,net primary production (NPP),soil respiration,CO2 fertilization effect,carbon stocks in ecosystem at present and at Last Glacial Maximum,“deconvolution” method,and climate effect on net carbon fluxes between land ecosystem and atmosphere.We summarize the merits and shortness of different research methods,and make some comments on the currently researching results and their developing directions.